~ Technically and Operationally Commercial Aviation

COMMUNICATION SYSTEMS

If there is any conflicting information, your FCOM shall be the overriding reference.

Q1. Which components of the radio communication system will still be available in the EMER ELEC CONFIG?

A1. The following components of the Radio Communication System would still be available in the EMER. ELEC. CONFIG. :-

(a) VHF 1

(b) RMP 1

(c) CAPT ACP

(d) F/O ACP

(e) FLT. INTERPHONE

(f) CAPT. LOUDSPEAKER

Q2. Which ECAM is going to be triggered if any push–to–talk {PTT} transmission selector is jammed in transmit position?

{VHF has an alarm to indicate that the microphone is stuck in emission position for more than 30 seconds, an interrupted tone sounds for 5 seconds and the emission is turned off. It gets active once crew releases the PTT P/B and presses again}

A2. The following ECAM warning would be generated in case the PTT transmission selector is jammed in the transmit position :-

VHF 1 (2)(3) EMITTING

HF 1 (2) EMITTING

Aural Warning : SINGLE CHIME

Master Light : MASTER CAUTION

*Flight Phase Inhibit : 3/4/5/7/8

Q3. If CIDS 1+2 FAULT is triggered on ECAM after engine start, what is inoperative in communication system?

A3. CIDS 1+2 FAULT

The above is for crew awareness. The following systems are inoperative :-

(a) Passenger Address

(b) Cabin and Service Interphone

(c) Passenger Signs

Q4. When GND HF DATALINK is at OVRD, what happens?

A4. On the A320, HF Transmission is inhibited on ground. The GND HF DATALINK P/b located on Overhead panel may override the inhibition.

Q5. Which radio systems are dedicated for ACARS?

A5. VHF 3 is mainly dedicated to ACARS.

Q6. RMP3 is able to control VHF & HF TX/RX through RMP1 and RMP2 even if they are OFF. Is it true?

A6. TRUE.

Q7. The last selected radio freq remains in active window if RMP comes back on line after power off. Is it true?

A7. TRUE.

Q8. How would you recognize a failed RMP, and what actions should be taken? Can all comm. Radios still be tuned from the remaining RMPs?

(b) CAPT 3 : The pilot uses his acoustic equipment and the third occupant’s ACP.

(c) F/O 3 : The co-pilot uses his acoustic equipment and the third occupant’s ACP.

When the crew does this, it takes away the third occupant’s access to the acoustic equipment.

‘AUDIO 3 XFRD’ appears in green on the ECAM MEMO display.

Q20. F/O’s RMP has failed. What are the implications?

A20. There are two RMPs on the center pedestal and the third on the overhead panel. Each RMP can control any VHF or HF transceiver. RMP 1 and 2 are connected directly to all VHF and HF transceivers, whereas RMP 3 is connected to them via RMP 1 and 2. RMPs are connected together so that each RMP is updated to the selections made on other RMPs. Thus on failure of the F/O’s RMP, he can still use RMP 3 to control any VHF/ HF Transceiver.

Q21. What are the EMER EVAC indications in the cockpit and in the cabin when initiated from cockpit?

A21. EMER EVAC initiated from Cockpit :-

IN COCKPIT

On Overhead : COMMAND P/b

ON : (a) EVAC light flashes Red.

(b) Horn sounds.

IN CABIN

(a) EVAC lights flash at FWD and AFT attendant panels.

(b) Evacuation tone sounds.

Q22. What are the EMER EVAC indications in the cockpit and in the cabin when initiated from cabin with CAPT & CAPT / PURS Selector in CAPT position?

A22. When the EMER EVAC command is initiated from the cabin with the CAPT & CAPT/PURS selector in CAPT position, only the cockpit horn sounds for 3 seconds.

Q23. How is CVR energized?

A23. CVR is energized automatically :

(a) On the Ground during the first 5 minutes after the Aircraft electrical network is energized.

(b) On the Ground with one engine running.

(c) In Flight.

* On the ground, the crew can energize the CVR manually by pressing the GND CTL P/b.

Q24. How long is the CVR recording time?

A24. The CVR recording time is the last 2 hours.

Q25. For CVR testing, what should be the position of the Parking Brake?

An audio test signal, and a brief repetitive audio signal every 4 seconds,

should be heard through the loudspeakers. Once this is done, talk through

the handmike, ensure that your voice is heard on the loudspeakers, and

only then release the CVR test pushbutton.

Note– Only the handmike, not the boomset, should be used to carry out the

test as the audio signal must be heard on the loudspeakers.

— The flight crew may also hear an acoustic feedback during the test.

The test is still valid if this acoustic feedback is heard.

Q27. The Oxygen mask microphone activates when the mask is withdrawn from its stowage; however, when the mask is no longer required, how is its microphone de-activated?

A27. On the STOWAGE BOX for the Fixed Oxygen System for the Cockpit, pressing the RESET control slide, after the oxygen mask has been used, cuts off the oxygen, and the mask microphone.

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